833s came in trucks from the factory, guessing mid-late 70s (a bit out of my wheelhouse, so I can't tell you the exact years), so all the factory hardware is available. They used a fiberglass floor hump for the shifter. They used the long tail shaft (B,C,E body) transmission though- not sure if the trucks used the forward or rear shifter mounts on those. But the bellhousings and clutch linkages are out there for them.